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The Amniotic egg. Remember, reptiles are believed to have evolved from amphibians. Where do amphibians lay there eggs? - The water. Why? because their eggs are soft. The reptiles are the first to lay the amniotic egg which has a hard shell. If an amphibian tried to lay its egg on land, gravity would squad it because an amphibian's egg is jelly like. With the hard shell of the amniotic egg, reptiles have greater change of reproduction.
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∙ 14y ago
Kefelegn Hailu
Wiki User
∙ 6y agoThey developed the ability to either retain the developing embryos inside their bodies - or - form a shell around the embryo, creating an egg.
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Why are reptiles the first true land vertabrates?
They do not need water to reproduce.
Is it true Early land animals had to return to the water to reproduce?
Early land animals had to return to the water to reproduce.
What statements about vertebrates is true?
The development of an amniotic egg and internal fertilization allowed vertebrates to reproduce away from water.
One reason for the early success of reptiles was that?
1. reptiles are cold bloodied and can go for long periods without eating because they are not using food to keep warm . 2. reptiles have a scaly skin, which helped them adapt for camouflage,reduce loss of water via sweat and strong defence against skin being damaged by other predators.
How is an amniotic egg important adaptation for reptiles?
The amniotic egg allows reptiles to reproduce on land, away from water.
Why was the advance reptiles about to reproduce away from the water and how was that an advantage?
It was an advantage because reptiles no longer had to stay near bodies of water and could live in more environments than amphibians.
What allows reptiles to reproduce without water?
The Amniotic Egg
Do snakes need water in order to reproduce?
No. Snakes and other reptiles generally mate and reproduce on land.
Why are reptiles the first true land vertabrates?
They do not need water to reproduce.
What are alligators Amphibians or ReptileshttpwikianswerscomQAre alligators reptiles or amphibians?
Alligators are reptiles. Because they don't require water to reproduce, they are not amphibians.
Do fish need water to breed?
No. Reptiles commonly reporduce on land.
Why are salamanders and newts not reptiles?
Salamanders and newts are not reptiles because they reproduce by laying eggs in water and are aquatic for part of their life cycle. They are amphibians like frogs and toads.
Is it true Early land animals had to return to the water to reproduce?
Early land animals had to return to the water to reproduce.
Are reptiles or amphibians better suited for a dryer climate?
Reptiles are better suited for dry climates. Amphibians must always be moist, and in order to reproduce, they must have access to water.
Why were tough skin and amnion eggs so important to reptiles?
They allowed them to move away from water.
How did the evolution of an amniotic egg help reptiles?
The amniotic egg allowed early reptiles to move away from waterside habitats and colonize dry regions. It allowed reproduction on land by preventing the embryo from drying out, so eggs could be laid away from the water.
What statements about vertebrates is true?
The development of an amniotic egg and internal fertilization allowed vertebrates to reproduce away from water.
